Billie Joe Armstrong: ‘Psy is the herpes of music’

Green Day star Billie Joe Armstrong has taken aim at South Korean pop sensation Psy, calling the “Gangnam Style” hitmaker the “herpes” of music.

The singer was in rehab tackling substance abuse issues as Psy took over the world’s charts with his catchy dance anthem last year, and now the Asian superstar is back with his “Gangnam Style” follow-up, “Gentleman,” Armstrong has taken to Instagram.com to fire off at the wacky star.

The punk rocker writes, “This dude is the herpes of music. Once you think it’s gone, it comes back. #herpes #flareup #pleasegoaway.”

In a web chat with Japanese fans in February, the British rocker was asked if he liked Psy’s break-out global hit and said, “I think it’s an absolute classic. I love it. My kid dances to it every morning and it makes me chuckle and spit out my Corn Flakes.”